Jim Henson, Frank Oz, Jerry Juhl and Jerry Nelson appeared during the week of July 19, 1966. The Muppets were credited as co-hosts for the week, performing a number of sketches, and featured several interviews with Henson, et. al. These shows are available for viewing at The Paley Center for Media. The Muppets made return appearances to promote The Muppet Show in 1976, 1977 and 1979.